New images of clothing found in a suitcase that was dumped with the remains of a young child on the side of a South Australian highway are released in an attempt to help identify the suspected murder victim.

Cambodian police have charged and detained a property tycoon on his return to the kingdom after a video of his vicious assault on a popular TV star triggered widespread anger and a call from prime minister Hun Sen to give himself up.

Seven prison officials from the Mexican jail where drug kingpin Joaquin "El Chapo" Guzman escaped are charged over the affair and taken to a federal detention centre, the Mexican attorney-general's office says.